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| Start date | Reporting criterion | Title | Event description | System | LER | |
|---|---|---|---|---|---|---|
| ENS 48432 | 22 October 2012 16:30:00 | 10 CFR 30.50(b)(2) | Damaged Nuclear Density Gauge | Incident: At approximately 1130 CDT, at the new Joplin High School Construction Site in Joplin, Jasper County, Missouri, a nuclear density (gauge) was run over by a tire of a towed scraper. The damage was primarily to the housing of the meter. The technician immediately secured the area and contacted his supervisor. (The supervisor) went to the site and took readings using a TROX-A-LERT Model 3105B Radiation Survey Meter of the gauge and the soil where the gauge was run over and of the scraper which ran over the (gauge). Readings at 1 meter from the (gauge) ranged from 0.12 to 0.20 mrem/hr. A reading of 2.5 mrem/hr (was indicated at the) housing of the (gauge) . The source did not appear to be damaged and was still encapsulated in the (gauge). The gauge was placed in a truck box mounted in the bed of a pickup truck and taken back to (the licensee's lab). Once at the lab the gauge was wrapped in lead sheeting and placed in a nuclear (gauge) storage box. A reading of 0.1 mrem/hr was obtained at 1 meter with the lead sheeting wrapped around the meter. The damaged gauge is a CPN, serial number MD1205992. |